<template>
    <div class="about">
        <div class="about_us">关于我们</div>
        <div class="user">张三</div>
        <div class="phone hh">15289988888</div>
    </div>
</template>

<style lang="scss">
.about{
    .about_us,.user{
        color: red;
    }
    .about_us{
        &:hover{
            color: aqua;
        }
    }
    .phone {
        &:hover{
            color: blue;
        }
        &.hh{
            color: blueviolet;
        }
    }
}
</style>